costco.co.uk
Join the club & start saving! | Costco UK
Last scanned Aug 3, 2026, 1:00 AM · 9 views
Overall score
Fair
Summary
This website uses Angular. SEO is fair (70/100) and accessibility is excellent (90/100). Security scores good (85/100) and performance fair (60/100). Top issue: Missing meta description.
Top issues to fix
8 issues found · 2 high priority
Missing meta description
SEOAdd a ~150-character meta description to control your search-result snippet and lift click-through rate.
No H1 heading found
SEOAdd exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.
Missing X-Content-Type-Options header
SecurityAdd X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Missing X-Frame-Options header
SecurityAdd X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
robots.txt not found
SEOPublish /robots.txt with a Sitemap: directive to guide crawlers.
sitemap.xml not found
SEOPublish an XML sitemap and reference it from robots.txt to speed up page discovery.
+2 more issues — details in the sections below.
SEO
4 issue(s) found
Performance
3.33 s
Security
HTTPS & header checks
Accessibility
1 issue(s) found
Score history
+3 overall since Jul 26, 2026
- Overall
- 75
- SEO
- 70
- Security
- 85
- Performance
- 60
- Accessibility
- 90
Meta tags
- Title
- Join the club & start saving! | Costco UK
- Description
- Canonical
- https://www.costco.co.uk/
- Language
- en-GB
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1
- Robots meta
- index,follow
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- —
- CDN provider
- —
- IP address
- —
- ASN
- —
DNS records
| Type | Value |
|---|---|
| A | — |
| AAAA | — |
| MX | — |
| TXT | — |
| NS | — |
| CAA | — |
| CNAME | — |
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- DigiCert Inc
- Subject
- prod-sip.costco.co.uk
- Valid from
- Jul 13, 2026
- Valid to
- Jan 20, 2027
- Days until expiry
- 170
- SAN domains
- prod-sip.costco.co.uk, costcowholesalees.costco.es, costcowholesalefr.costco.fr, media-prod-sip.costco.co.kr, media-prod-sip.costco.co.uk, media-prod-sip.costco.com.mx, media-prod-sip.costco.com.tw, media.costco.co.jp, media.costco.co.kr, media.costco.co.nz, media.costco.co.uk, media.costco.com.au, media.costco.com.mx, media.costco.com.tw, media.costco.es, media.costco.fr, media.costco.is, media.costco.se, prod-sip.costco.co.jp, prod-sip.costco.co.kr, prod-sip.costco.com.au, prod-sip.costco.com.mx, prod-sip.costco.com.tw, prod-sip.costco.es, prod-sip.costco.fr, prod-sip.costco.is, signin-intl.costco.com, signinapi-intl.costco.com, www.costco.co.jp, www.costco.co.kr, www.costco.co.nz, www.costco.co.uk, www.costco.com.au, www.costco.com.mx, www.costco.com.tw, www.costco.es, www.costco.fr, www.costco.is, www.costco.se, www.costcowholesalees.costco.es, www.costcowholesalefr.costco.fr, www.occ.costco.co.jp
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyEnabled
- X-Frame-OptionsMissing
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 0 · H2 17 · H3 1
Links
726 internal · 47 external · 20 broken
Images
154 total · 2 missing alt
Scripts / Styles
8 scripts · 3 stylesheets
JS / CSS size
142 KB · 249 KB
Page size
1.5 MB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Missing meta description
- No H1 heading found
- robots.txt not found
- sitemap.xml not found
Accessibility issues
- No H1 heading found
Scan details
- Requested URL
- https://costco.co.uk
- Final URL
- https://www.costco.co.uk:443/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 3.30 s
- HTML size
- 1.5 MB
- Redirect chain
- https://costco.co.uk → https://www.costco.co.uk:443/
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does costco.co.uk use?
- costco.co.uk is built with Angular.
- Is costco.co.uk secure (HTTPS)?
- Yes. costco.co.uk uses TLS 1.3 with a certificate issued by DigiCert Inc, valid until Jan 20, 2027.
- Who hosts costco.co.uk?
- Hosting provider information for costco.co.uk is not available yet.
- What is costco.co.uk's SEO score?
- costco.co.uk scored 70/100 for SEO in the latest analysis (fair).
- What is costco.co.uk's overall website score?
- costco.co.uk has an overall SiteGraph score of 75/100, combining SEO, performance, security, and accessibility.
- Has costco.co.uk's score changed over time?
- costco.co.uk's overall score has improved by 3 points (from 72 to 75) since Jul 26, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card